Stock Incentive Plans	3 Months Ended
	Mar. 28, 2020
Share-based Payment Arrangement [Abstract]
Stock Incentive Plans	During the three months ended March 28, 2020, the Company granted 158,206 stock options, 124,863 performance-based restricted stock units (“PSUs”) and 155,550 restricted stock units (“RSUs”) to eligible employees under the National Vision Holdings, Inc. 2017 Omnibus Incentive Plan (the “2017 Omnibus Incentive Plan”). The time-based options granted in fiscal 2020 vest in three equal annual installments, with one-third of the total options vesting on each of the first, second, and third anniversaries of the grant date, subject to continued employment through the applicable vesting date. The PSUs granted in fiscal 2020 are settled after the end of the performance period (i.e., cliff vesting), which begins on the first day of our 2020 fiscal year and ends on the last day of our 2022 fiscal year, and are based on the Company’s achievement of certain performance targets. The RSUs granted in fiscal 2020 vest primarily in three equal installments through February 28, 2023.